[Gravityloss]

Looking at some ballpark estimates what targets it should hit, Japan consumes about one petawatt hour per year. We assume 10% of electricity consumption for one cable and a 10% slice of the value for transport. Electricity price 20 c/kWh:

10^15 x 0.1 x 0.1 x 0.2 x 10^-3 = 2 billion dollars per year

I have been saying it for a while. Looks like the renewables will cause a lot of long distance electricity transfer lines to be built.

It's an industry ready for some disruption too.